{"id":5308,"date":"2023-05-25T14:38:18","date_gmt":"2023-05-25T06:38:18","guid":{"rendered":"http:\/\/www.dcl-controls.com\/?p=5308"},"modified":"2025-03-23T06:24:19","modified_gmt":"2025-03-23T06:24:19","slug":"set-up-dcl-actuator","status":"publish","type":"post","link":"https:\/\/dclcontrols.com\/en_gb\/support\/how-to-actuator\/set-up-dcl-actuator","title":{"rendered":"How to Set Up a Modulating Electric Valve?"},"content":{"rendered":"
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1. Installing the Actuator onto the Valve<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Follow the installation instructions in “How to Install the Actuator onto the Valve”<\/strong> to correctly install the actuator on the valve. Confirm normal operation by manually testing the valve movement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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2. Adjusting the Mechanical Limits for Fully Closed Position<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  • Use the handwheel to move the valve to the fully closed position<\/strong>. Ensure the mechanical limit stop does not touch the adjustment screw or housing.<\/p><\/li>

  • Loosen the scale plate locking screw<\/strong>, adjust the scale plate so that the pointer aligns with the 0 degree mark<\/strong> (SHUT position), and then tighten the locking screw.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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    3. Adjusting the Mechanical Limits for Fully Open Position<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    • Use the handwheel to move the valve to the fully open position<\/strong>. Ensure the mechanical limit stop does not touch the adjustment screw or housing.<\/p><\/li>

    • If the valve\u2019s stroke is 90\u00b0, the pointer should align with the 0 degree mark<\/strong> (OPEN position) on the scale plate.<\/p><\/li><\/ul>

      Important Notes:<\/strong><\/p>

      • Unless specified otherwise, during factory debugging, the actuator\u2019s stroke angle between the fully closed and fully open positions is typically 90\u00b0<\/strong>.<\/p><\/li>

      • After valve matching, if the actuator\u2019s fully closed and fully open positions do not align with the valve\u2019s positions, adjustments should be made. Ensure the mechanical limits are set as shown in the diagram below.<\/p><\/li>

      • All modulating actuators (type E) have already considered potential shifts in the potentiometer\u2019s working area during valve matching. Therefore, adjustments to the potentiometer and gears are generally not required.<\/p><\/li>

      • Wiring terminals should be correctly connected as shown in the diagram to avoid damaging the servo controller. Do not connect the \u201cpower\u201d<\/strong> terminal to the \u201cinput signal\u201d<\/strong> or \u201coutput signal\u201d<\/strong> terminals.<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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        4. Servo Controller Panel Explanation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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        \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u534e\u6613\u79d1\u6280\u7535\u52a8\u6267\u884c\u5668\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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        \n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\u534e\u6613\u79d1\u6280\u7535\u52a8\u9600\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        Key Functions:<\/strong><\/p>

        • Open:<\/strong> In \u201cSet State\u201d<\/strong>, press this key to open the valve. Release to stop.<\/p><\/li>

        • Shut:<\/strong> In \u201cSet State\u201d<\/strong>, press this key to close the valve. Release to stop.<\/p><\/li>

        • Set:<\/strong> In \u201cSet State\u201d<\/strong>, use with Open<\/strong> or Shut<\/strong> to achieve specific functions.<\/p><\/li><\/ul>

          Selection Switches:<\/strong><\/p>

          • SA (Signal Selection):<\/strong> Switch to select the input signal type (Direct or Reverse) and set state. Ensure to set it in powered-on state for it to take effect.<\/p>

            • 1<\/strong> \u2013 Direct Action<\/p><\/li>

            • 2<\/strong> \u2013 Set State<\/p><\/li>

            • 3<\/strong> \u2013 Reverse Action<\/p><\/li><\/ul><\/li>

            • SB (Signal Failure Handling):<\/strong> Select how to handle signal failure.<\/p>

              • 1<\/strong> \u2013 Valve fully open<\/p><\/li>

              • 2<\/strong> \u2013 Valve maintains position<\/p><\/li>

              • 3<\/strong> \u2013 Valve fully closed<\/p><\/li><\/ul><\/li><\/ul>

                Deadband Setting Potentiometer:<\/strong><\/p>

                • Adjust the deadband value from 0.5% to 5.0%<\/strong> (factory default set at 1.5%<\/strong>). Each adjustment increments the deadband by 0.5%<\/strong>.<\/p><\/li><\/ul>

                  Indicators:<\/strong><\/p>

                  • L1 (Green):<\/strong> Power on indicator (lights when the controller is powered).<\/p><\/li>

                  • L2 (Red):<\/strong> Input signal failure indicator (lights when the input signal fails).<\/p><\/li>

                  • L3 (Red):<\/strong> Position detection circuit fault indicator (lights when there\u2019s an issue with the position potentiometer wiring or component).<\/p><\/li>

                  • L4 (Red):<\/strong> Mechanical jam fault indicator (lights when there\u2019s a jam in the mechanism).<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                    5. Settings<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                    Entering Set State:<\/strong><\/p>

                    • Set the SA switch<\/strong> to position 2<\/strong>, entering the Set State<\/strong>, where functions like stroke calibration, signal failure handling, deadband setting, manual operation, and output current calibration can be configured.<\/p><\/li><\/ul>

                      Stroke Calibration:<\/strong><\/p>

                      • Fully Closed Calibration:<\/strong><\/p>

                        • Use Open<\/strong> or Shut<\/strong> to move the valve to the fully closed position. Press and hold the Set<\/strong> button, then press Shut<\/strong>. Keep both buttons pressed for about 4 seconds<\/strong> until L2<\/strong> lights up. Release both buttons, completing the full closed calibration.<\/p><\/li><\/ul><\/li>

                        • Fully Open Calibration:<\/strong><\/p>

                          • Use Open<\/strong> or Shut<\/strong> to move the valve to the fully open position. Press and hold the Set<\/strong> button, then press Open<\/strong>. Keep both buttons pressed for about 4 seconds<\/strong> until L2<\/strong> lights up. Release both buttons, completing the full open calibration.<\/p><\/li><\/ul><\/li><\/ul>

                            Input Signal Failure Handling:<\/strong><\/p>

                            • Use the SB switch<\/strong> to select how the system should handle input signal failure:<\/p>

                              • 1<\/strong> \u2013 Valve fully open<\/p><\/li>

                              • 2<\/strong> \u2013 Valve holds position<\/p><\/li>

                              • 3<\/strong> \u2013 Valve fully closed<\/p><\/li><\/ul><\/li>

                              • Note: Changing the SB switch<\/strong> is effective even during automatic operation (when SA<\/strong> is set to 1<\/strong> or 3<\/strong>).<\/p><\/li><\/ul>

                                Deadband Value Setting:<\/strong><\/p>

                                • Rotate the deadband potentiometer<\/strong> clockwise to increase the deadband, and counterclockwise to decrease it. Each increment changes the deadband by 0.5%<\/strong>. The factory default is 1.5%<\/strong>.<\/p><\/li><\/ul>

                                  You can manually open or close the valve using the Open<\/strong> or Shut<\/strong> keys in the Set State<\/strong>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                                  6. Operation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                  Entering Automatic Operation:<\/strong><\/p>

                                  • Set the SA switch<\/strong> to 1<\/strong> or 3<\/strong> to enter Automatic Operation<\/strong>. In this mode, the actuator\u2019s position and output signal follow the changes in the input signal.<\/p><\/li><\/ul>

                                    Note:<\/strong><\/p>

                                    • In Reverse Action<\/strong>, a 4mA<\/strong> input corresponds to a 100%<\/strong> valve opening, while a 20mA<\/strong> input corresponds to a 0%<\/strong> opening.<\/p><\/li>

                                    • The servo controller has an accuracy level of Class 1<\/strong>, with a basic error of no more than \u00b11%<\/strong> and hysteresis less than 1%<\/strong>.<\/p><\/li><\/ul>

                                      Output Current vs. Valve Position:<\/strong><\/p>

                                      Input Signal<\/th>4mA<\/th>8mA<\/th>12mA<\/th>16mA<\/th>20mA<\/th><\/tr><\/thead>
                                      Valve Position<\/td>0%<\/td>25%<\/td>50%<\/td>75%<\/td>100%<\/td><\/tr>
                                      Output Current<\/td>4mA<\/td>8mA<\/td>12mA<\/td>16mA<\/td>20mA<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                      7. Output Current Calibration<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                      Factory Calibration:<\/strong>
                                      The servo controller is factory-calibrated, so no user adjustments are typically required. However, if the output current at fully closed (4mA) or fully open (20mA) positions deviates by more than 1%<\/strong>, you may need to calibrate it.<\/p>

                                      Calibration Steps:<\/strong><\/p>

                                      1. Connect a 20mA DC ammeter<\/strong> to the output.<\/p><\/li>

                                      2. Set the SA switch<\/strong> to 2<\/strong> to enter Set State<\/strong>.<\/p><\/li>

                                      3. Press and hold the Set<\/strong> button, then simultaneously press the Open<\/strong> and Shut<\/strong> buttons.<\/p><\/li>

                                      4. When L2<\/strong> lights up, release all buttons, and the system will enter 4mA calibration<\/strong>. Adjust the current to 4mA<\/strong> using the Open<\/strong> and Shut<\/strong> keys.<\/p><\/li>

                                      5. After completing the 4mA calibration<\/strong>, press and hold Set<\/strong> again and wait for L2<\/strong> to light up. Then release it to enter 20mA calibration<\/strong> and adjust the current to 20mA<\/strong>.<\/p><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                                        8. Fault Diagnosis and Troubleshooting<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                        Fault Indicator Lights:<\/strong><\/p>

                                        • L2 Lights Up:<\/strong>
                                          Input signal failure\u2014check the input signal voltage.<\/p>

                                          • If the voltage is abnormal (outside the 0.88-4.4V range), check for open circuits, short circuits, or incorrect signal sources.<\/p><\/li><\/ul><\/li>

                                          • L3 Lights Up:<\/strong>
                                            Position detection fault\u2014check the potentiometer for issues such as open circuits, short circuits, or damage.<\/p><\/li>

                                          • L4 Lights Up:<\/strong>
                                            Mechanical jam\u2014check the motor connections and actuator for jams.<\/p><\/li><\/ul>

                                            Valve and Signal Mismatch:<\/strong>
                                            If the actuator\u2019s stroke does not match the input signal, or if the actuator cannot complete its full stroke, it may indicate a problem with the servo controller or the deadband setting potentiometer circuit.<\/p>

                                            For further assistance, follow the troubleshooting steps outlined for each fault code.<\/p><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

                                            1. Installing the Actuator onto the Valve Follow the installation instructions in “How to Install the Actuator onto the Valve” to correctly install the actuator on the valve. Confirm normal operation by manually testing the valve movement. 2. Adjusting the Mechanical Limits for Fully Closed Position Use the handwheel to move the valve to the […]<\/p>","protected":false},"author":1,"featured_media":10944,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[100],"tags":[53],"class_list":["post-5308","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-actuator","tag-actuator"],"acf":[],"_links":{"self":[{"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/posts\/5308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/comments?post=5308"}],"version-history":[{"count":0,"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/posts\/5308\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/media\/10944"}],"wp:attachment":[{"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/media?parent=5308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/categories?post=5308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dclcontrols.com\/en_gb\/wp-json\/wp\/v2\/tags?post=5308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}